/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/dijkstra-u_unwindbound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 02:20:52,218 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 02:20:52,220 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 02:20:52,283 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 02:20:52,283 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 02:20:52,285 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 02:20:52,287 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 02:20:52,289 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 02:20:52,290 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 02:20:52,293 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 02:20:52,294 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 02:20:52,295 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 02:20:52,295 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 02:20:52,297 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 02:20:52,298 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 02:20:52,300 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 02:20:52,300 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 02:20:52,301 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 02:20:52,302 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 02:20:52,306 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 02:20:52,307 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 02:20:52,308 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 02:20:52,309 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 02:20:52,309 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 02:20:52,314 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 02:20:52,314 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 02:20:52,315 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 02:20:52,316 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 02:20:52,316 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 02:20:52,316 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 02:20:52,317 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 02:20:52,317 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 02:20:52,318 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 02:20:52,319 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 02:20:52,320 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 02:20:52,320 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 02:20:52,320 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 02:20:52,320 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 02:20:52,320 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 02:20:52,321 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 02:20:52,321 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 02:20:52,322 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 02:20:52,345 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 02:20:52,346 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 02:20:52,346 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 02:20:52,346 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 02:20:52,347 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 02:20:52,347 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 02:20:52,347 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 02:20:52,347 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 02:20:52,347 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 02:20:52,347 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 02:20:52,348 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 02:20:52,348 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 02:20:52,348 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 02:20:52,348 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 02:20:52,348 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 02:20:52,348 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 02:20:52,349 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 02:20:52,349 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 02:20:52,349 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 02:20:52,349 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 02:20:52,349 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 02:20:52,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 02:20:52,350 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 02:20:52,350 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 02:20:52,350 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 02:20:52,350 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 02:20:52,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 02:20:52,350 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 02:20:52,351 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 02:20:52,351 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 02:20:52,351 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 02:20:52,351 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 02:20:52,352 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 02:20:52,352 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 02:20:52,547 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 02:20:52,566 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 02:20:52,567 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 02:20:52,568 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 02:20:52,568 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 02:20:52,569 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/dijkstra-u_unwindbound2.c [2022-01-11 02:20:52,620 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9888c0d67/1dc853bb44a44289b6975c8794d2c1a5/FLAG1e8048492 [2022-01-11 02:20:53,000 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 02:20:53,001 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/dijkstra-u_unwindbound2.c [2022-01-11 02:20:53,008 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9888c0d67/1dc853bb44a44289b6975c8794d2c1a5/FLAG1e8048492 [2022-01-11 02:20:53,018 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9888c0d67/1dc853bb44a44289b6975c8794d2c1a5 [2022-01-11 02:20:53,020 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 02:20:53,021 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 02:20:53,024 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 02:20:53,024 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 02:20:53,028 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 02:20:53,029 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 02:20:53" (1/1) ... [2022-01-11 02:20:53,030 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a5a1f02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:20:53, skipping insertion in model container [2022-01-11 02:20:53,030 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 02:20:53" (1/1) ... [2022-01-11 02:20:53,034 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 02:20:53,049 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 02:20:53,199 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/dijkstra-u_unwindbound2.c[525,538] [2022-01-11 02:20:53,238 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 02:20:53,246 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 02:20:53,260 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/dijkstra-u_unwindbound2.c[525,538] [2022-01-11 02:20:53,278 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 02:20:53,290 INFO L208 MainTranslator]: Completed translation [2022-01-11 02:20:53,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:20:53 WrapperNode [2022-01-11 02:20:53,291 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 02:20:53,293 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 02:20:53,293 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 02:20:53,293 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 02:20:53,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:20:53" (1/1) ... [2022-01-11 02:20:53,311 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:20:53" (1/1) ... [2022-01-11 02:20:53,336 INFO L137 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 109 [2022-01-11 02:20:53,337 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 02:20:53,337 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 02:20:53,337 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 02:20:53,338 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 02:20:53,343 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:20:53" (1/1) ... [2022-01-11 02:20:53,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:20:53" (1/1) ... [2022-01-11 02:20:53,348 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:20:53" (1/1) ... [2022-01-11 02:20:53,348 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:20:53" (1/1) ... [2022-01-11 02:20:53,366 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:20:53" (1/1) ... [2022-01-11 02:20:53,369 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:20:53" (1/1) ... [2022-01-11 02:20:53,370 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:20:53" (1/1) ... [2022-01-11 02:20:53,371 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 02:20:53,372 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 02:20:53,372 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 02:20:53,372 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 02:20:53,376 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:20:53" (1/1) ... [2022-01-11 02:20:53,381 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 02:20:53,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:20:53,400 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 02:20:53,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 02:20:53,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 02:20:53,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 02:20:53,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 02:20:53,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 02:20:53,484 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 02:20:53,485 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 02:20:54,531 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 02:20:54,538 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 02:20:54,538 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-11 02:20:54,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:20:54 BoogieIcfgContainer [2022-01-11 02:20:54,540 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 02:20:54,540 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 02:20:54,540 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 02:20:54,542 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 02:20:54,543 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:20:54" (1/1) ... [2022-01-11 02:20:54,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 02:20:54 BasicIcfg [2022-01-11 02:20:54,595 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 02:20:54,596 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 02:20:54,597 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 02:20:54,598 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 02:20:54,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 02:20:53" (1/4) ... [2022-01-11 02:20:54,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f2592da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 02:20:54, skipping insertion in model container [2022-01-11 02:20:54,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:20:53" (2/4) ... [2022-01-11 02:20:54,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f2592da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 02:20:54, skipping insertion in model container [2022-01-11 02:20:54,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:20:54" (3/4) ... [2022-01-11 02:20:54,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f2592da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 02:20:54, skipping insertion in model container [2022-01-11 02:20:54,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 02:20:54" (4/4) ... [2022-01-11 02:20:54,600 INFO L111 eAbstractionObserver]: Analyzing ICFG dijkstra-u_unwindbound2.cTransformedIcfg [2022-01-11 02:20:54,603 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 02:20:54,603 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2022-01-11 02:20:54,636 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 02:20:54,642 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 02:20:54,642 INFO L340 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-01-11 02:20:54,654 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 41 states have (on average 1.6341463414634145) internal successors, (67), 50 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:20:54,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-01-11 02:20:54,658 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:20:54,658 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:20:54,659 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-01-11 02:20:54,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:20:54,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1572895235, now seen corresponding path program 1 times [2022-01-11 02:20:54,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:20:54,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393868932] [2022-01-11 02:20:54,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:20:54,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:20:54,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:20:54,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:20:54,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:20:54,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393868932] [2022-01-11 02:20:54,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393868932] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:20:54,799 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:20:54,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 02:20:54,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363921244] [2022-01-11 02:20:54,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:20:54,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 02:20:54,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:20:54,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 02:20:54,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 02:20:54,828 INFO L87 Difference]: Start difference. First operand has 51 states, 41 states have (on average 1.6341463414634145) internal successors, (67), 50 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:20:54,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:20:54,846 INFO L93 Difference]: Finished difference Result 99 states and 130 transitions. [2022-01-11 02:20:54,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 02:20:54,848 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-01-11 02:20:54,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:20:54,854 INFO L225 Difference]: With dead ends: 99 [2022-01-11 02:20:54,854 INFO L226 Difference]: Without dead ends: 47 [2022-01-11 02:20:54,856 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 02:20:54,860 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 02:20:54,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 02:20:54,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-01-11 02:20:54,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-01-11 02:20:54,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 38 states have (on average 1.3421052631578947) internal successors, (51), 46 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:20:54,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2022-01-11 02:20:54,887 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 9 [2022-01-11 02:20:54,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:20:54,887 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2022-01-11 02:20:54,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:20:54,888 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2022-01-11 02:20:54,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-11 02:20:54,888 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:20:54,889 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:20:54,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 02:20:54,889 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-01-11 02:20:54,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:20:54,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1006660880, now seen corresponding path program 1 times [2022-01-11 02:20:54,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:20:54,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141614083] [2022-01-11 02:20:54,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:20:54,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:20:54,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:20:55,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:20:55,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:20:55,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141614083] [2022-01-11 02:20:55,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141614083] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:20:55,058 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:20:55,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 02:20:55,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116507679] [2022-01-11 02:20:55,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:20:55,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 02:20:55,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:20:55,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 02:20:55,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 02:20:55,061 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:20:55,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:20:55,105 INFO L93 Difference]: Finished difference Result 89 states and 96 transitions. [2022-01-11 02:20:55,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 02:20:55,107 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-01-11 02:20:55,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:20:55,110 INFO L225 Difference]: With dead ends: 89 [2022-01-11 02:20:55,110 INFO L226 Difference]: Without dead ends: 49 [2022-01-11 02:20:55,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 02:20:55,111 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 0 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 02:20:55,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 140 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 02:20:55,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-01-11 02:20:55,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2022-01-11 02:20:55,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 40 states have (on average 1.325) internal successors, (53), 48 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:20:55,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2022-01-11 02:20:55,123 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 10 [2022-01-11 02:20:55,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:20:55,123 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2022-01-11 02:20:55,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:20:55,124 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2022-01-11 02:20:55,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-11 02:20:55,125 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:20:55,125 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:20:55,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 02:20:55,126 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-01-11 02:20:55,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:20:55,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1107699669, now seen corresponding path program 1 times [2022-01-11 02:20:55,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:20:55,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409259215] [2022-01-11 02:20:55,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:20:55,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:20:55,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:20:55,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:20:55,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:20:55,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409259215] [2022-01-11 02:20:55,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409259215] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:20:55,394 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:20:55,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 02:20:55,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37386603] [2022-01-11 02:20:55,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:20:55,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 02:20:55,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:20:55,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 02:20:55,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 02:20:55,396 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:20:57,657 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-11 02:21:00,016 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-11 02:21:00,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:21:00,101 INFO L93 Difference]: Finished difference Result 93 states and 100 transitions. [2022-01-11 02:21:00,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 02:21:00,101 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-01-11 02:21:00,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:21:00,102 INFO L225 Difference]: With dead ends: 93 [2022-01-11 02:21:00,102 INFO L226 Difference]: Without dead ends: 91 [2022-01-11 02:21:00,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 02:21:00,103 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 70 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 30 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-01-11 02:21:00,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 130 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 72 Invalid, 2 Unknown, 0 Unchecked, 4.6s Time] [2022-01-11 02:21:00,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-01-11 02:21:00,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 53. [2022-01-11 02:21:00,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 44 states have (on average 1.3409090909090908) internal successors, (59), 52 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:21:00,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2022-01-11 02:21:00,112 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 11 [2022-01-11 02:21:00,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:21:00,112 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2022-01-11 02:21:00,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:21:00,112 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2022-01-11 02:21:00,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-11 02:21:00,113 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:21:00,113 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:21:00,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 02:21:00,113 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-01-11 02:21:00,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:21:00,114 INFO L85 PathProgramCache]: Analyzing trace with hash 21012068, now seen corresponding path program 1 times [2022-01-11 02:21:00,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:21:00,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063000208] [2022-01-11 02:21:00,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:21:00,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:21:00,126 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 02:21:00,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1334611574] [2022-01-11 02:21:00,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:21:00,126 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:21:00,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:21:00,128 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 02:21:00,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-11 02:21:00,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:21:00,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-11 02:21:00,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:21:00,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:21:00,529 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 02:21:00,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:21:00,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063000208] [2022-01-11 02:21:00,529 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 02:21:00,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334611574] [2022-01-11 02:21:00,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334611574] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:21:00,530 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:21:00,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 02:21:00,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514782352] [2022-01-11 02:21:00,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:21:00,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 02:21:00,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:21:00,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 02:21:00,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 02:21:00,531 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:21:00,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:21:00,586 INFO L93 Difference]: Finished difference Result 66 states and 71 transitions. [2022-01-11 02:21:00,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 02:21:00,586 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-01-11 02:21:00,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:21:00,587 INFO L225 Difference]: With dead ends: 66 [2022-01-11 02:21:00,587 INFO L226 Difference]: Without dead ends: 54 [2022-01-11 02:21:00,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 02:21:00,588 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 1 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 02:21:00,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 185 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 02:21:00,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-01-11 02:21:00,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2022-01-11 02:21:00,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 44 states have (on average 1.3181818181818181) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:21:00,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2022-01-11 02:21:00,594 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 12 [2022-01-11 02:21:00,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:21:00,594 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2022-01-11 02:21:00,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:21:00,594 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2022-01-11 02:21:00,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-01-11 02:21:00,595 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:21:00,595 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:21:00,615 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-11 02:21:00,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:21:00,812 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-01-11 02:21:00,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:21:00,813 INFO L85 PathProgramCache]: Analyzing trace with hash 652545041, now seen corresponding path program 1 times [2022-01-11 02:21:00,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:21:00,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118011005] [2022-01-11 02:21:00,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:21:00,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:21:00,824 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 02:21:00,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [744613339] [2022-01-11 02:21:00,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:21:00,824 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:21:00,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:21:00,856 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 02:21:00,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-11 02:21:00,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:21:00,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-11 02:21:00,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:21:01,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:21:01,196 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 02:21:01,197 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:21:01,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118011005] [2022-01-11 02:21:01,197 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 02:21:01,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744613339] [2022-01-11 02:21:01,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744613339] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:21:01,197 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:21:01,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 02:21:01,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160140070] [2022-01-11 02:21:01,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:21:01,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 02:21:01,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:21:01,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 02:21:01,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-11 02:21:01,199 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:21:01,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:21:01,776 INFO L93 Difference]: Finished difference Result 118 states and 132 transitions. [2022-01-11 02:21:01,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 02:21:01,777 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-01-11 02:21:01,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:21:01,777 INFO L225 Difference]: With dead ends: 118 [2022-01-11 02:21:01,777 INFO L226 Difference]: Without dead ends: 74 [2022-01-11 02:21:01,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-11 02:21:01,779 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 73 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-11 02:21:01,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 95 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-11 02:21:01,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-01-11 02:21:01,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 67. [2022-01-11 02:21:01,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 58 states have (on average 1.2586206896551724) internal successors, (73), 66 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:21:01,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 73 transitions. [2022-01-11 02:21:01,787 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 73 transitions. Word has length 13 [2022-01-11 02:21:01,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:21:01,787 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 73 transitions. [2022-01-11 02:21:01,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:21:01,788 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 73 transitions. [2022-01-11 02:21:01,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-01-11 02:21:01,788 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:21:01,788 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:21:01,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-11 02:21:01,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:21:01,989 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-01-11 02:21:01,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:21:01,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1478756783, now seen corresponding path program 1 times [2022-01-11 02:21:01,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:21:01,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975755824] [2022-01-11 02:21:01,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:21:01,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:21:02,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:21:02,130 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:21:02,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:21:02,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975755824] [2022-01-11 02:21:02,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975755824] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 02:21:02,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968423776] [2022-01-11 02:21:02,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:21:02,131 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:21:02,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:21:02,132 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 02:21:02,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-11 02:21:02,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:21:02,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-11 02:21:02,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:21:02,470 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:21:02,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 02:21:02,616 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:21:02,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968423776] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 02:21:02,616 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 02:21:02,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2022-01-11 02:21:02,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661754619] [2022-01-11 02:21:02,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 02:21:02,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-11 02:21:02,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:21:02,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-11 02:21:02,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-01-11 02:21:02,617 INFO L87 Difference]: Start difference. First operand 67 states and 73 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:21:02,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:21:02,747 INFO L93 Difference]: Finished difference Result 109 states and 118 transitions. [2022-01-11 02:21:02,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 02:21:02,748 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-01-11 02:21:02,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:21:02,748 INFO L225 Difference]: With dead ends: 109 [2022-01-11 02:21:02,749 INFO L226 Difference]: Without dead ends: 69 [2022-01-11 02:21:02,749 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-01-11 02:21:02,749 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 5 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 02:21:02,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 192 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 02:21:02,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-01-11 02:21:02,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2022-01-11 02:21:02,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 60 states have (on average 1.25) internal successors, (75), 68 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:21:02,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 75 transitions. [2022-01-11 02:21:02,758 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 75 transitions. Word has length 13 [2022-01-11 02:21:02,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:21:02,758 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 75 transitions. [2022-01-11 02:21:02,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:21:02,758 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 75 transitions. [2022-01-11 02:21:02,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-11 02:21:02,758 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:21:02,758 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:21:02,777 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-01-11 02:21:02,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:21:02,977 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-01-11 02:21:02,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:21:02,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1369163444, now seen corresponding path program 1 times [2022-01-11 02:21:02,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:21:02,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196677967] [2022-01-11 02:21:02,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:21:02,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:21:03,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:21:03,208 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:21:03,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:21:03,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196677967] [2022-01-11 02:21:03,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196677967] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 02:21:03,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636886627] [2022-01-11 02:21:03,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:21:03,209 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:21:03,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:21:03,210 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 02:21:03,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-11 02:21:03,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:21:03,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-11 02:21:03,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:21:03,527 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:21:03,527 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 02:21:03,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636886627] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:21:03,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-11 02:21:03,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2022-01-11 02:21:03,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974714811] [2022-01-11 02:21:03,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:21:03,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 02:21:03,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:21:03,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 02:21:03,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-01-11 02:21:03,529 INFO L87 Difference]: Start difference. First operand 69 states and 75 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:21:04,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:21:04,641 INFO L93 Difference]: Finished difference Result 140 states and 156 transitions. [2022-01-11 02:21:04,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 02:21:04,642 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-01-11 02:21:04,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:21:04,643 INFO L225 Difference]: With dead ends: 140 [2022-01-11 02:21:04,643 INFO L226 Difference]: Without dead ends: 118 [2022-01-11 02:21:04,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-01-11 02:21:04,643 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 81 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-11 02:21:04,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 149 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-11 02:21:04,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-01-11 02:21:04,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 88. [2022-01-11 02:21:04,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 79 states have (on average 1.2658227848101267) internal successors, (100), 87 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:21:04,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 100 transitions. [2022-01-11 02:21:04,652 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 100 transitions. Word has length 14 [2022-01-11 02:21:04,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:21:04,652 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 100 transitions. [2022-01-11 02:21:04,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:21:04,653 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 100 transitions. [2022-01-11 02:21:04,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-11 02:21:04,653 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:21:04,653 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:21:04,669 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-01-11 02:21:04,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:21:04,864 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-01-11 02:21:04,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:21:04,864 INFO L85 PathProgramCache]: Analyzing trace with hash 30597047, now seen corresponding path program 1 times [2022-01-11 02:21:04,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:21:04,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749164354] [2022-01-11 02:21:04,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:21:04,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:21:04,872 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 02:21:04,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [333098633] [2022-01-11 02:21:04,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:21:04,872 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:21:04,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:21:04,880 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 02:21:04,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-11 02:21:04,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:21:04,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-11 02:21:04,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:21:05,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:21:05,141 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 02:21:05,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:21:05,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749164354] [2022-01-11 02:21:05,142 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 02:21:05,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333098633] [2022-01-11 02:21:05,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333098633] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:21:05,142 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:21:05,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 02:21:05,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133635278] [2022-01-11 02:21:05,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:21:05,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 02:21:05,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:21:05,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 02:21:05,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 02:21:05,143 INFO L87 Difference]: Start difference. First operand 88 states and 100 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:21:06,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:21:06,015 INFO L93 Difference]: Finished difference Result 97 states and 108 transitions. [2022-01-11 02:21:06,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 02:21:06,016 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-01-11 02:21:06,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:21:06,016 INFO L225 Difference]: With dead ends: 97 [2022-01-11 02:21:06,016 INFO L226 Difference]: Without dead ends: 76 [2022-01-11 02:21:06,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 02:21:06,017 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 17 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-11 02:21:06,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 97 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-11 02:21:06,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-01-11 02:21:06,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 73. [2022-01-11 02:21:06,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 64 states have (on average 1.296875) internal successors, (83), 72 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:21:06,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 83 transitions. [2022-01-11 02:21:06,023 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 83 transitions. Word has length 15 [2022-01-11 02:21:06,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:21:06,023 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 83 transitions. [2022-01-11 02:21:06,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:21:06,024 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 83 transitions. [2022-01-11 02:21:06,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-11 02:21:06,024 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:21:06,024 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:21:06,032 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-11 02:21:06,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:21:06,229 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-01-11 02:21:06,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:21:06,230 INFO L85 PathProgramCache]: Analyzing trace with hash 505569635, now seen corresponding path program 1 times [2022-01-11 02:21:06,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:21:06,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112212006] [2022-01-11 02:21:06,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:21:06,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:21:06,237 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 02:21:06,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1141802076] [2022-01-11 02:21:06,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:21:06,237 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:21:06,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:21:06,238 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 02:21:06,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-11 02:21:06,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:21:06,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-11 02:21:06,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:21:06,441 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-11 02:21:06,441 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 02:21:06,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:21:06,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112212006] [2022-01-11 02:21:06,441 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 02:21:06,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141802076] [2022-01-11 02:21:06,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141802076] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:21:06,442 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:21:06,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 02:21:06,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041232439] [2022-01-11 02:21:06,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:21:06,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 02:21:06,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:21:06,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 02:21:06,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 02:21:06,443 INFO L87 Difference]: Start difference. First operand 73 states and 83 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:21:09,577 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-11 02:21:09,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:21:09,811 INFO L93 Difference]: Finished difference Result 97 states and 108 transitions. [2022-01-11 02:21:09,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 02:21:09,812 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-01-11 02:21:09,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:21:09,812 INFO L225 Difference]: With dead ends: 97 [2022-01-11 02:21:09,812 INFO L226 Difference]: Without dead ends: 90 [2022-01-11 02:21:09,812 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 02:21:09,813 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 24 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 21 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-01-11 02:21:09,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 96 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 42 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2022-01-11 02:21:09,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-01-11 02:21:09,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 88. [2022-01-11 02:21:09,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 79 states have (on average 1.240506329113924) internal successors, (98), 87 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:21:09,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 98 transitions. [2022-01-11 02:21:09,820 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 98 transitions. Word has length 15 [2022-01-11 02:21:09,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:21:09,820 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 98 transitions. [2022-01-11 02:21:09,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:21:09,820 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 98 transitions. [2022-01-11 02:21:09,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-11 02:21:09,820 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:21:09,820 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:21:09,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-11 02:21:10,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:21:10,027 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-01-11 02:21:10,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:21:10,028 INFO L85 PathProgramCache]: Analyzing trace with hash -679827824, now seen corresponding path program 2 times [2022-01-11 02:21:10,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:21:10,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108062978] [2022-01-11 02:21:10,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:21:10,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:21:10,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:21:10,319 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:21:10,319 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:21:10,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108062978] [2022-01-11 02:21:10,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108062978] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 02:21:10,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902238778] [2022-01-11 02:21:10,319 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-11 02:21:10,319 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:21:10,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:21:10,320 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 02:21:10,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-11 02:21:10,486 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-11 02:21:10,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 02:21:10,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjunts are in the unsatisfiable core [2022-01-11 02:21:10,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:21:11,409 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:21:11,409 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 02:21:11,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902238778] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:21:11,409 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-11 02:21:11,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 14 [2022-01-11 02:21:11,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499734860] [2022-01-11 02:21:11,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:21:11,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-11 02:21:11,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:21:11,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-11 02:21:11,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-01-11 02:21:11,410 INFO L87 Difference]: Start difference. First operand 88 states and 98 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:21:11,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:21:11,492 INFO L93 Difference]: Finished difference Result 158 states and 175 transitions. [2022-01-11 02:21:11,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 02:21:11,493 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-01-11 02:21:11,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:21:11,493 INFO L225 Difference]: With dead ends: 158 [2022-01-11 02:21:11,493 INFO L226 Difference]: Without dead ends: 85 [2022-01-11 02:21:11,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-01-11 02:21:11,494 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 45 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 02:21:11,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 268 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 17 Invalid, 0 Unknown, 14 Unchecked, 0.1s Time] [2022-01-11 02:21:11,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-01-11 02:21:11,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 83. [2022-01-11 02:21:11,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 74 states have (on average 1.2297297297297298) internal successors, (91), 82 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:21:11,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 91 transitions. [2022-01-11 02:21:11,500 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 91 transitions. Word has length 16 [2022-01-11 02:21:11,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:21:11,500 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 91 transitions. [2022-01-11 02:21:11,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:21:11,500 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 91 transitions. [2022-01-11 02:21:11,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-11 02:21:11,501 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:21:11,501 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:21:11,507 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-01-11 02:21:11,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:21:11,703 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-01-11 02:21:11,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:21:11,703 INFO L85 PathProgramCache]: Analyzing trace with hash -88692242, now seen corresponding path program 1 times [2022-01-11 02:21:11,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:21:11,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329609648] [2022-01-11 02:21:11,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:21:11,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:21:11,723 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 02:21:11,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [504208497] [2022-01-11 02:21:11,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:21:11,724 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:21:11,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:21:11,726 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 02:21:11,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-11 02:21:11,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:21:11,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 29 conjunts are in the unsatisfiable core [2022-01-11 02:21:11,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:21:12,566 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:21:12,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 02:21:34,914 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse3 (mod (* 4 |c_ULTIMATE.start_ULTIMATE.start_main_~q~0#1Int|) 4294967296))) (let ((.cse2 (div |c_ULTIMATE.start_ULTIMATE.start_main_~p~0#1Int| 2)) (.cse0 (* (- 1) |c_ULTIMATE.start_ULTIMATE.start_main_~r~0#1Int|)) (.cse1 (div .cse3 4))) (or (<= (div (+ (- 1) .cse0 (mod (+ .cse1 (mod (+ (* 2 .cse2) (* 2 .cse1)) 4294967296)) 4294967296) (* |c_ULTIMATE.start_ULTIMATE.start_main_~p~0#1Int| (- 18446744073709551615)) (* (- 4294967295) .cse1)) (- 4294967296)) (+ (div (+ (* 18446744073709551615 |c_ULTIMATE.start_ULTIMATE.start_main_~p~0#1Int|) |c_ULTIMATE.start_ULTIMATE.start_main_~r~0#1Int| (- 4294967296) (* 4294967295 .cse1)) 4294967296) 1)) (<= .cse3 |c_ULTIMATE.start_ULTIMATE.start_main_~n~0#1Int|) (< .cse2 0) (not (<= |c_ULTIMATE.start_ULTIMATE.start_main_~q~0#1Int| |c_ULTIMATE.start_ULTIMATE.start_main_~n~0#1Int|)) (< (div (+ (- 1) (* (- 1) |c_ULTIMATE.start_ULTIMATE.start_main_~p~0#1Int|) (* (- 1) .cse1)) (- 4294967296)) (+ (div (+ (- 1) .cse0 |c_ULTIMATE.start_ULTIMATE.start_main_~p~0#1Int| .cse1) 4294967296) 2))))) is different from true [2022-01-11 02:21:45,616 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-01-11 02:21:45,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:21:45,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329609648] [2022-01-11 02:21:45,616 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 02:21:45,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504208497] [2022-01-11 02:21:45,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504208497] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 02:21:45,616 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-11 02:21:45,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-01-11 02:21:45,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363194552] [2022-01-11 02:21:45,617 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-11 02:21:45,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-11 02:21:45,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:21:45,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-11 02:21:45,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=105, Unknown=1, NotChecked=20, Total=156 [2022-01-11 02:21:45,618 INFO L87 Difference]: Start difference. First operand 83 states and 91 transitions. Second operand has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:21:48,055 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-11 02:21:55,543 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-11 02:21:59,335 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-11 02:22:01,369 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-11 02:22:04,241 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-11 02:22:06,280 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-11 02:22:07,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:22:07,494 INFO L93 Difference]: Finished difference Result 313 states and 339 transitions. [2022-01-11 02:22:07,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-11 02:22:07,495 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-11 02:22:07,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:22:07,496 INFO L225 Difference]: With dead ends: 313 [2022-01-11 02:22:07,496 INFO L226 Difference]: Without dead ends: 255 [2022-01-11 02:22:07,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=128, Invalid=427, Unknown=1, NotChecked=44, Total=600 [2022-01-11 02:22:07,496 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 281 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 141 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 111 IncrementalHoareTripleChecker+Unchecked, 20.4s IncrementalHoareTripleChecker+Time [2022-01-11 02:22:07,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [281 Valid, 508 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 314 Invalid, 4 Unknown, 111 Unchecked, 20.4s Time] [2022-01-11 02:22:07,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2022-01-11 02:22:07,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 154. [2022-01-11 02:22:07,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 145 states have (on average 1.206896551724138) internal successors, (175), 153 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:22:07,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 175 transitions. [2022-01-11 02:22:07,513 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 175 transitions. Word has length 30 [2022-01-11 02:22:07,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:22:07,513 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 175 transitions. [2022-01-11 02:22:07,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:22:07,513 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 175 transitions. [2022-01-11 02:22:07,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-11 02:22:07,514 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:22:07,514 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:22:07,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-11 02:22:07,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-01-11 02:22:07,725 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-01-11 02:22:07,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:22:07,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1545471233, now seen corresponding path program 1 times [2022-01-11 02:22:07,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:22:07,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228776471] [2022-01-11 02:22:07,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:22:07,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:22:07,735 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 02:22:07,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [36432085] [2022-01-11 02:22:07,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:22:07,736 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:22:07,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:22:07,736 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 02:22:07,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-11 02:22:08,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:22:08,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-11 02:22:08,081 INFO L286 TraceCheckSpWp]: Computing forward predicates...